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HOISTING MACHIHE Filed Ana. 18 1922 2 Sheets-Sheet 2 Patented .luly l0, l923.,J

narran stares meissie twishtl @FFEQEE LOUIS FALZER AND EDWIN M. WEBBER, OF CHICAGO, ILLINOIS, SAID WEBBER AS- SIGNOR T0 SAID vFALZER.

HOISTING MACHINE.

Application filed August 18., 1922. Serial No. 582,607.

To (1U 11710711 'it muy matera Be. it known that we. Loris FAI/Zilli and Enwlx .llndVicnmcla citizens of the llnited States. residing at ("hieago. in the eounty of (look and State of illinois. have invented certain new and useful lmproven'ients in lloistin; r Maehines. of whieh the followingr is a speeilieation.

This invention relates to improvements in power-operated hoistiner marhines. and has refereneiVI more partieularly to a machine for hoistingdiri from caisson :Hulot-her wellsA ln the digging ol' caissonsy for the foundations of large buildings. it has heretofore been the universaly prat-tire. wherever poweraetuated boists were employed, to equip the months of a row of eaissons with winchheads and pulleys, and operate them all simultaneously through a eable eng-aged with the. pulleys of all the hoists and itself driven vby a motor at one end of therow. Siu-h a method of power operation is praeti :al and eeoimmieal only where the exeavation proceeds with substantial uniformity throughout the entire `group of caissons; lult it very fretpiently happens that the work in one or more is delayed through encountering` abnormal renditionsso that with this method pended idly and mueh time is was-ted,

Une object of our present; invent-ion is to provide a simple. inexpensive` and prat-tical portable machine which operates as a unit 0n an individual caisson or well. and as soon as the latter is duel can be readily moved into position to assist in the digging of an other.

Another object of the invention to pio vide a hoist-inl;r apparatus for raisin;r lowered buckets wherein the machine` and particularly tbe win -h-head shall be so positioned as to be out of the way of the bueket as it drops'into and rises out of the caisson or wellv further object is to provide a. machine wherein the winch-head may be continuously rotated in one direction onlyv` while the hoistin;r eable may be so manipulated on the wimh-head bythe operative as to expeditiously effect' `the alternate. lifting' and lowering;` operations without any stoppine; or reversing' of the motor or winchhead. Y e 4 )the-r objects and attendant advantages ot the invention will be. api'iarent, to persons skilled in the art. as the same becomes better understood by reference to the followingr detailed deserilitionl taken in connection with the accompanying drawings wherein we have illustrated an embodiment of the invention which has been found in practice to satisfactorily effectuate the above-stated purposes and objects of the invention, and in which- Fig. 1 is a side elevation of the apparatus shown vas mounted in workinzgr position at.

the upper end of a caisson or well; and

' Fig'. .2 is a similar view atright angles to that of Fig. l and viewed from the left of the latter' figure.

Referring;` to the drawings. 5 indicates the wel] or hole of the caisson, the dirt and other debris from which is raised by the bucket t.. (ln a suitable foundation 7 surroumlingr the. mouth of the hole 5 is erected a tripod S haw ing its apex approximately in 'the line of the renter or axis of the hole Swung: from the top of the tripod by a suspension rope or eable 9 is a pulley bloek l0 in which is `iournaled a grooved pulley or sheave ll, over which is passed a rope or eable 1Q attached at its lower end to the baily 6" of the b'let 6. From the sheave l1 the eable extends. dmvnwardly to and around the wineh-heznl 13 of the hoistingmachine. rl`his latter, as herein shown, comprises an electrie motor 14e, a speed redueer 15. a flexible ,coupling 1G between the motor sha-ft and the speed reducer7 an ordinary safety device 1G' for prcventinpT breakage of parts in the event of abnormal load strains, and the winch-head. 13 equipped at its inner end with a rope xQ'uard '17: also an outboard bearing and pedestal 1S supporting the bearing for the winch-head shaft.

The, above parts are all mounted upon and supported by a base-plate '19, preferably consisting of a section ofi'channel bar; and this latter in turn rests upon a pair of horizontal brace-bars Q0 attached to and extending between a pair of the tripod lees; the baseplate 19 beineT strongly anchored in .place by bolts 21 extending therethrougrh` betwejn the eross-bars 20, and also through the crossbars 22 underlying the bars 20.

At its outer end the base-plate 19 is ad justably supported fromtthe ground or foundation member 7 by and between a pair of legs 23 lthese latter being provided adjacent, to their upper ends with a series of spaced bolt holes 24 to receive fastening bolts 25 l passedqthrough the sides of the channel beam .-raised. .This necessitates 'the disposition of that limb of the hoisting cable which lies between the sheave 11 Iand the winch-head 13 at a slight angleto the vertical; and to maintain this section of the winding cable at a right angle to the axis of the winchhead, the latter and its motor, speed reducer and safety device, which are all in axial alignment with each other, are cor-v respondingly inclined. to the horizontal, as

clearly shown in Fig. l, and the axis of the winch-head is also disposed approximately .radial to the Vertical path of travel of the busket.

. of the hole in Fig, 1, wraps the cable 12.' f around the winch-head 13 with a su'icient ln the operation of the apparatus, the machine attendant, standing just at'the left number of coils to insure ample friction, and as the winch-head is turned to wind up the cable,the attendant simultaneously pulls on the free end of the cable with sulicient force to maintain the friction lgrip of the coils on the Ysurface 'of the winch-head, a comparativel light pull being suiiicient 4where a considerable number of turns Aof the cable around the winch-head are taken.` As the bucket emerges from the hole, it is grasped by one or more attendants, emptied, and then swung back to a position directly over the hole. The'maehine attendant, Without stopping the motor, intermits his pull on the cable, and pays the latter out slightly,

.thereby releasing the friction grip of the cable on the winch-head, and the bucket descends by gravity. An important advantage, already above referred to, resides in the fact that the winch-head lies to one side of the vertical path of travel of the bucket so that it does lnot interfere with the manipulation of the latter during.

the elevating, dumpingand replacing operations. Another advantage of the described apparatus resides in its portable character, since, as Isoon as one hole has been dug to the re uired depth, the entire apparatuscan be pic ed up bodily by three men, one at each le'g of the tripod, and transported to a position vover the next hole to be dug.

We have herein shown and-described one practicalI embodiment of the invention for purposes ofillustration, but it. is manifest that the details. of structure and arrangement may be considerably modified and varied without departingA from the principle of, the invention or sacrificing any of its advantages. Hence, we reserve all such variations and modifications as fall Within the spirit and purview of the appended claims.

We claim:

1. 'In a portable hoisting apparatus of .the

character described, the combination of a of rotation of said winch-head being disl posed substantially'at right angles to the depending limb of the cable wound thereon.

2. In a portable hoisting apparatus of the character described, the combination of a tripod, a pulley suspended from the apex of.

said tripod,'a hoisting cable passed over ing limb of said, cable, a cross-bar connecting two legs of said tripod, a platform mounted on said cross-bar, and a Winch-head and a motor therefor mounted on said platform with said winch-head disposed at one side of the-vertical path of said bucket and receiving the other depending limb of said 'cable coiled thereon, the axis of said winchsaid pulley, a bucket hung from one dependhead being downwardly and forwardly inclined to lie at substantially a right angle to the depending limb of the cable wound thereon. I

3. In a portable hoisting apparatus of the character described, the combination ofy a tripod, a pulley suspended from the apex of said tripod, a hoisting cable mounted. on said pulley, a bucket suspended from one depending limb of said cable, a eross-bar connecting two legs of said tripod, a platform mounted on and attached tol said cross-bar, a leg support for the outer end of said platform, and an electric motor, speed reducer, safety device andy winch-head mounted in coaxial alignment on said platform with said winch-head dis osed at one side of the vertical path of sai bucket andhaving the other depending limb of said cable Vcoiled thereon.

LOUIS FALZER. EDWIN M WEBBER. 

